General Information

Electronic Stability Control
C1237 Primary Pressure Sensor-Signal - General Information

Component Location





General Description

The pressure sensor, installed in the HECU, converts the brake pressure to judge the driver's brake intention when the ESC program is operated. When pressure is applied to the sensor, the resistance of the sensor's strain gauge changes. The change in resistence changes the voltage output from the sensor.

DTC Description

The failure is detected if the pressure sensor signal noise is out of normal range, or the pressure sensor signal is changed abnormally.
In spite of no brake switch signal, master cylinder pressure exceeds 20bar when brake switch is normal.

DTC Detecting Condition





Diagnostic Circuit Diagram